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DWT Universal AASHTO/EN Double Wheel Tracker

The DWT UNIVERSAL Double Wheel Tracker performing both AASHTO Hamburg Type and EN tests, with unique solutions for the maximum accuracy and reliability

EN 12697-22 | AASHTO T324

Main Features

  • Meets and exceed AASHTO and EN standards and many DOT method
  • Fully automatic test performance on two specimens or one specimen
  • Variable wheel speed from 20 to 30 cycles/min
  • Fixed table, mobile wheel 230 mm travel
  • Wheel load of 700/705 N or adjustable from 700 to 1500 N
  • Temperature range from ambient to 80°C (±0.5°C)
  • Accurate temperature control (±0.5°C) for both in water and air test
  • Ruth depth transducers feature 25 mm travel, 0.01 mm accuracy
  • Direct rut depth measurement system, with transducers axially mounted in alignment with the wheel's centre
  • Motorized wheel-assembly lifting system for easy removal of slabs
  • Free access to the wide testing area
  • Optional independent lifting system for double or single wheel testing
  • Slab mould size of 400x300 mm, 360x300 mm (for 320x260 mm slabs), double 150 mm gyratory compactor cylinders, 200 mm/8"/10" diameter cores
  • Slab thickness adjustable from 40 to 100 mm (in 10 mm steps)
  • Extensive use of stainless steel in the machine's construction; not limited to the parts in contact with water
  • PC and software included
  • Automatic water filling and leveling system, no need to adjust or control the water level above the specimen during test
  • Laptop PC control with dedicated software including results performance, test database management and multiple test elaboration
  • tecnical specifications
    • Scroll the table
      • Displacement motion: the arm is moving and the carriage is fixed
      • Wheel travel: 230 mm
      • Wheel speed: variable from 20 to 30 cycles/min
      • Wheel load: 700/705 N by weigths (78-PV33B05/6 models), adjustable from 700 to 1500 N in 100 N steps (78-PV33D05/6 models)
      • Temperature range: ambient to 80°C, ± 0.5°C 
      • Rut depth transducer range: 25 mm, 0.01 mm accuracy
      • Moulds: not included, to be ordered separately
      • Slab thickness: adjustable from 40 to 100 mm in 10 mm steps
      • Overall dimensions (w x d x h): 1540x1020x1600 mm
      • Weight approx.: 600 kg
      • PC and software: included
      Models 78-PV33B05   78-PV33D05 (1500 N)
      78-PV33B06   78-PV33D06 (1500 N)
      Standards AASTHO T324 / EN 12697-22
      Testing mode In air and water
      Description DWT, Hamburg and EN type, double wheel tracker, interchangeable wheels (steel for AASTHO and rubber for EN), wet and dry conditioning
      Material and dimensions (diameter per width) of the two loaded wheels Stainless steel 203x47 mm
      Rubber tyre 203x50 mm
      Temperature control method (accuracy ±0.5°C for both water and air) Air: Three 1200 W electronically controlled air blowers
      Water: Three 1500 W heaters, re-circulating pump, automatic feed and control level
      Power rating 5500 W


  • ordering info
    • 78-PV33B05
      DWT Wet and dry universal double wheel tracker

      Conforming to Hamburg type AASHTO T324 and EN 12697-22 Small Size Device, in-air and in-water conditioning. Complete with both stainless steel and rubber wheels, laptop PC, software and clear transparent sliding doors. Set of moulds to be ordered separately. 
      380 V, 50 Hz, 3 ph+N

      78-PV33B06
      As above but 220 V, 60 Hz, 3 ph

      78-PV33D05
      DWT Wet and dry universal double wheel tracker
      Wheel load adjustable up to 1500 N (by 100 N steps). Conforming to Hamburg type AASHTO T324 and EN 12697-22 Small Size Device, in-air and in-water conditioning. Complete with both stainless steel and rubber wheels, laptop PC, software and clear transparent sliding doors. Set of moulds to be ordered separately.
      380 V, 50 Hz, 3 ph+N

      78-PV33D06
      As above but 220 V, 60 Hz, 3 ph

  • accessories
    • Moulds and trays for 78-PV33B05 / 78-PV33B06 model

      78-PV3/001

      Set of two moulds for 400x300 mm samples, thickness from 40 to 100 mm, recommended for test according to EN 12697-22 in water or in air.

      78-PV3/002
      Set of two moulds for 360x300 mm (also suitable for 320x260 nn samples by using 20 mm thick plaster spacers), thickness variable from 40 to 100 mm.

      78-PV3/005
      Set of trays with handles for double 150 mm diameter cylindrical samples. 77-PV3/003 adaptors for 150 mm dia. cylindrical sample to be ordered separately

      78-PV3/003
      Set of two moulds adaptors for double 150 mm dia. core (total 4 adaptors made of special self lubricating acetal copolymer), thickness 60 mm, fitted in 78-PV3/002 or 78-PV3/012 360x300 moulds (not included). 

      Moulds and trays for 78-PV33D05 / 78-PV33D06 model

      78-PV3/011 
      Set of two moulds 400x300 mm, 38 to 120 mm height

      78-PV3/012
      Set of two moulds 360x300 (suitable for 320x260 mm slabs), 38 to 120 mm height

      78-PV3/003
      Set of two moulds adaptors for double 150 mm dia. core (total 4 adaptors made of special self lubricating acetal copolymer), thickness 60 mm, fitted in 78-PV3/002 or 78-PV3/012 360x300 moulds (not included). 




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